ALSA: hda - VIA: Fix VT1708 can't build up Headphone control issue

Since VT1708 didn't support the control of getting connection number,
building of headphone control will fail in via_hp_build() function.

Signed-off-by: Lydia Wang <[e-mail]>
Cc: <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/hda/patch_via.c

···
 		break;
 	}
 
-	nums = snd_hda_get_connections(codec, nid, conn, HDA_MAX_CONNECTIONS);
-	if (nums <= 1)
-		return 0;
+	if (spec->codec_type != VT1708) {
+		nums = snd_hda_get_connections(codec, nid,
+					       conn, HDA_MAX_CONNECTIONS);
+		if (nums <= 1)
+			return 0;
+	}
 
 	knew = via_clone_control(spec, &via_hp_mixer[0]);
 	if (knew == NULL)